|Monthly Tech-Tip |
CAS Number : 471-34-1
Molecular formula : CaCO3
This product is absorbed by the respiratory tract.
Excessive concentrations of this nuisance dust may cause coughing, sneezing and irritation of the nasal mucosal membranes.
Skin overexposure does not represent a health hazard.
There is no information available but dusts could cause mecanical irritation.
Excessive doses by ingestion may cause alcalosis and hyperkaliemia.
No data concerning any antenatal developmental effect has been found in the consulted documentary sources.
No data concerning any carcinogenic effect has been found in the consulted documentary sources.
No data concerning any mutagenic in vivo or in vitro effect on cells of mammals has been found in the consulted documentary sources.
Move the worker to fresh air. Seek medical care if the individual presents respiratory problems.
If large amounts are ingested, give water to drink and seek medical advice.
Copiously wash the affected area with water. Ask for medical advice if irritation develops.
Copiously wash with running water. Ask for medical advice if irritation develops.
VEMP = 10 mg/m³, as total dust containing less than 1% crystalline silica.
By Edouard Bastarache
Article by Edouard Bastarache
Edouard Bastarache is a well known doctor that has written many articles on the subject of toxicity of ceramic materials and books on technical aspects of ceramics. He writes in both English and French.
In ceramics, calcium carbonate is primarily a source of CaO in raw stoneware and porcelain glazes.